import java.util.Scanner;
/**
*@Author Josh Lear
*@Version 6/14/14
* Simulation
*/
public class TJU_1516{
    public static void main (String[] args) {
        Scanner sc = new Scanner(System.in);
        while (true) {
            int n = sc.nextInt();
            int u = sc.nextInt();
            int d = sc.nextInt();
            if (n == 0 && u == 0 && d == 0) {
                break;
            }
            System.out.println(sim(n, u, d));

        }
    }

    public static int sim (int goal, int up, int down) {
        int h = up;
        int time = 1;
        while (h < goal) {
            h -= down;
            h += up;
            time++;
            time++;
        }
        return time;
    }
}